Hey,Im Creating a Paintball Agr (Black Ops 2 Tank)I Was Wondering if I can attach a Hard Drive to my arduino and tell it to look from the hard drive for its data If you can please help

its going to be a big tank I it will have a gun, feed system, sensor, camera, tracks, and so on I really dont want to overload my arduino so I would use a hard drive to save my data and the arduino to run the data

A 32GB Sd card is a lot of storage and would be easier. SdFat will accept SDXC cards that are formatted FAT32. You can buy this 256GB cards for about $82. 512GB cards are available but cost about $450.